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Name: |
C2851-35UC/K9 |
Description: | 2851 w/ PVDM2-48,NME-CUE,35 CME/CUE/Ph lic,SP Serv,128F/512D |
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C2851-35UC/K9 Overview
C2851-35UC/K9 is a robust integrated services router built on a modular architecture that supports expansion via EHWIC modules, ensuring flexible customization while maintaining reliable performance. It offers versatile power options with an AC power supply, high availability redundancy, and dual WAN interfaces along with dedicated LAN ports that expedite secure connectivity and advanced integrated services.
C2851-35UC/K9 delivers industry-class throughput and comprehensive VPN features, supporting routing protocols such as OSPF, BGP, EIGRP, and RIP to meet the communications demands of dynamic enterprise environments. Its integrated voice capabilities, built-in firewall, and modular design make it ideally suited for branch offices and unified communications deployments that require robust performance and reliable redundancy.
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C2851-35UC/K9 Specifications
Product Type | Enterprise Router |
VPN Support | IPSec / SSL VPN / DMVPN |
Power Source | AC Power Supply |
Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing |
Broadband | N/A |
Architecture | Modular |
WAN Configuration | Dual WAN |
WAN Ports | 2 WAN |
LAN Ports | 2 LAN Ports |
Ethernet Technology | 10/100 |
Wi-Fi Standard | N/A |
Connectivity Type | Wired |
Network Protocols | IPv4 / IPv6 |
Remote Management | Telnet / SSH / SNMP |
Compliance Standards | FCC / CE / RoHS |
Wireless Support | No |
Speed/Capacity | N/A |
Firewall Features | Yes |
Features | VPN / VoIP / Integrated Services / Firewall |
Use Case | Enterprise / Business |
Management | Managed |
Form Factor | Rack-mount |
Integrated Services | Voice |
High Availability Support | Supported |
Safety | N/A |
EMC | N/A |
Telecom | N/A |
Throughput Capacity | 75 Mbps |
QoS Features | Supported |
Built-in Security Features | Firewall / Intrusion Prevention |
Expansion Slots | EHWIC |
Modular Slots Available | 2 Slots |
Stacking Capability | No |
5G Support | No |
Memory | 256 MB |
Flash Memory | 128 MB |
Interface Ports | RJ-45 |
Power | 220 W |
Device Type | Router |
Product Name | Cisco 2851 Integrated Services Router (UC) |
Height | N/A |
Width | N/A |
Depth | N/A |
Weight | N/A |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.







Product Comparison Table
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Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
Connectivity Type | Wired / Wireless / Ethernet | Wired | Wired | Wired | Wired |
Broadband | N/A | N/A | N/A | Fiber Optic | N/A |
Power Source | AC Power Supply | AC Power Supply | Redundant | AC Power Supply with redundant options | AC Power Supply / DC Power Supply / Redundant |
Architecture | Fixed | Modular | Modular | Modular | Fixed |
WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
WAN Ports | 2 WAN | 2 WAN | Modular WAN | 2 Modular WAN Ports | 2 WAN |
LAN Ports | 4 LAN Ports | 2 LAN Ports | Modular LAN | 4 Modular LAN Ports | 4 LAN Ports |
Ethernet Technology | 10/100 | 10/100 | 10G | 10/100/1000 | 10/100/1000 |
Wi-Fi Standard | WiFi 4 | N/A | N/A | N/A | WiFi 6 |
Wireless Support | Yes | No | No | No | No |
Speed/Capacity | Fast Ethernet | N/A | 10 Gbps | Gigabit | Gigabit |
Routing Protocols Supported | - | - | - | - | - |
VPN Support | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN | N/A | IPSec / SSL VPN / GRE | IPSec / SSL VPN |
Firewall Features | Yes | Yes | N/A | Yes | Yes |
Features | VPN / VoIP / IPv6 Compatible / Firewall | VPN / VoIP / Integrated Services / Firewall | Modular, High Availability, Redundant, High Performance | VPN, Firewall, IPv6 Compatible, High Availability | VPN, IPv6 Compatible, Firewall, MPLS |
Use Case | Business | Enterprise / Business | Enterprise | Enterprise | Enterprise |
Management | Managed | Managed | Managed | Managed | Managed |
Form Factor | Desktop | Rack-mount | Chassis | Rack-mount Chassis | Rack-mount |
Integrated Services | Voice / Video | Voice | N/A | Voice, Video, WAN Optimization | Voice, Video |
High Availability Support | Supported | Supported | Supported | Supported | Supported |
Throughput Capacity | 0.05 Gbps | 75 Mbps | 10 Gbps | 2 Gbps | 1 Gbps |
QoS Features | Supported | Supported | Supported | Supported | Supported |
Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | N/A | Firewall, Intrusion Prevention | Firewall, Intrusion Prevention |
Expansion Slots | EHWIC | EHWIC | NIM / EHWIC | NIM, SFP+ | NIM |
Modular Slots Available | 2 Slots | 2 Slots | 3+ Slots | 3+ Slots | 2 Slots |
Stacking Capability | No | No | No | Yes | Yes |
5G Support | No | No | No | No | No |
Memory | 512 MB | 256 MB | 4 GB | 4 GB | 4 GB |
Flash Memory | 256 MB | 128 MB | 512 MB | 512 MB | 512 MB |
Interface Ports | RJ-45 | RJ-45 | 10G SFP+ | RJ-45, SFP+ | RJ-45, SFP |
Device Type | Router | Router | Router | Router | Router |
Product Name | CISCO1941W-E/K9 | Cisco 2851 Integrated Services Router (UC) | Cisco 7606S-RSP7C-10G-R | 7603S-RSP720C-P | AR169G-L Enterprise Router |
Height | 1.73 inches | N/A | N/A | 4 inches | 1.75 inches |
Width | 17.5 inches | N/A | N/A | 17 inches | 17.5 inches |
Depth | 14.4 inches | N/A | N/A | 18 inches | 15 inches |
Weight | 11 lbs | N/A | N/A | 25 lbs | 5 lbs |
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